NOVA"Secrets of the Viking Sword"
The Ulfberht sword of the Vikings is a revolutionary high-tech tool of its day, a work of art and considered to be one of the greatest swords ever made. NOVA uses cutting-edge science and old-fashioned detective work to reconstruct the Ulfberht and unravel its mystery.G

11:00 pm

Inventions That Shook The World"The 1910's"
Saving lives and taking lives are the hallmarks of this decade. The umbrella supplies the inspiration for a new device that lets airplane pilots parachute to safety. Sonar navigation comes to the aid of ships at sea; and a garment manufacturer develops the first safety hood to protect firefighters inside burning buildings.G